Also, starting my journey in real state investment made change my mindset and since last year I have been more disciplined on my finances and I have been taking better decision on how I spend my money. 

Its not tricky, it just takes discipline to save $.

Self management works if you are local and can separate emotion from business.

I do agree with you, when your margin of error is higher you don't have to be as precise which ultimately leads to waste in profits and prolongs your abilities to reach your goal if you are not disciplined.

And the truth is, if the investment property was completely passive and you had zero connection with it, such as an arbitrary stock in a mutual fund, then I would agree not to get emotionally attached to any one investment.  

This has affected me on an emotional level far deeper than it has economically. 

I find new investors often struggle with keeping emotions out of the deal.

All in all - owning a place to rent to other people is a business, and business decisions need to be made based on that cold hard facts and not on an emotional basis, unless someone wants to quickly go out of business.

All normal emotions for going through the tedious construction process. 

Especially in the "investor" areas, buyers are being more disciplined and we are able to pull some levers to get decent deals done for the buyer.